GCF of two or more numbers Calculator allows you to quickly calculate the GCF of 61, 20, 49 i.e. 1 largest integer that divides all the numbers equally.

Greatest common factor (GCF) of 61, 20, 49 is **1**.

GCF(61, 20, 49) = 1

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

- Greatest Common Factor of 61, 20, 49 by common division method
- Greatest Common Factor of 61, 20, 49 with matching the biggest common factor

∴ GCF of numbers is 1 because of no common factors present between them.

**Factors of 61**

List of positive integer factors of 61 that divides 61 without a remainder.

1,61

**Factors of 20**

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

**Factors of 49**

List of positive integer factors of 49 that divides 49 without a remainder.

1,7,49

**Greatest Common Factor**

We found the factors 61,20,49 . The biggest common factor number is the **GCF** number.

So the **greatest common factor 61,20,49 ** is **1**.

Here are some samples of GCF of two or more Numbers calculations.

1. What is the GCF of 61, 20, 49?

Answer: GCF of 61, 20, 49 is 1.

2. How to Find the GCF of 61, 20, 49

Answer: Greatest Common Factor(GCF) of 61, 20, 49 = 1

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(61, 20, 49) = 1.